-
Name Type Description options
Options.
Name Type Description styleUrl
string The URL of the Mapbox style object to use for this layer. For a style created with Mapbox Studio and hosted on Mapbox, this will look like 'mapbox://styles/you/your-style'.
accessToken
string The access token for your Mapbox style.
source
string If your style uses more than one source, you need to use either the
source
property or thelayers
property to limit rendering to a single vector source. Thesource
property corresponds to the id of a vector source in your Mapbox style.layers
Array.<string> Limit rendering to the list of included layers. All layers must share the same vector source. If your style uses more than one source, you need to use either the
source
property or thelayers
property to limit rendering to a single vector source.declutter
boolean (defaults to true) Declutter images and text. Decluttering is applied to all image and text styles of all Vector and VectorTile layers that have set this to
true
. The priority is defined by the z-index of the layer, thezIndex
of the style and the render order of features. Higher z-index means higher priority. Within the same z-index, a feature rendered before another has higher priority.className
string (defaults to 'ol-layer') A CSS class name to set to the layer element.
opacity
number (defaults to 1) Opacity (0, 1).
visible
boolean (defaults to true) Visibility.
extent
module:ol/extent~Extent The bounding extent for layer rendering. The layer will not be rendered outside of this extent.
zIndex
number The z-index for layer rendering. At rendering time, the layers will be ordered, first by Z-index and then by position. When
undefined
, azIndex
of 0 is assumed for layers that are added to the map'slayers
collection, orInfinity
when the layer'ssetMap()
method was used.minResolution
number The minimum resolution (inclusive) at which this layer will be visible.
maxResolution
number The maximum resolution (exclusive) below which this layer will be visible.
minZoom
number The minimum view zoom level (exclusive) above which this layer will be visible.
maxZoom
number The maximum view zoom level (inclusive) at which this layer will be visible.
renderOrder
module:ol/render~OrderFunction Render order. Function to be used when sorting features before rendering. By default features are drawn in the order that they are created. Use
null
to avoid the sort, but get an undefined draw order.renderBuffer
number (defaults to 100) The buffer in pixels around the tile extent used by the renderer when getting features from the vector tile for the rendering or hit-detection. Recommended value: Vector tiles are usually generated with a buffer, so this value should match the largest possible buffer of the used tiles. It should be at least the size of the largest point symbol or line width.
renderMode
module:ol/layer/VectorTileRenderType | string (defaults to 'hybrid') Render mode for vector tiles:
'hybrid'
: Polygon and line elements are rendered as images, so pixels are scaled during zoom animations. Point symbols and texts are accurately rendered as vectors and can stay upright on rotated views.'vector'
: Everything is rendered as vectors. Use this mode for improved performance on vector tile layers with only a few rendered features (e.g. for highlighting a subset of features of another layer with the same source).
map
module:ol/PluggableMap~PluggableMap Sets the layer as overlay on a map. The map will not manage this layer in its layers collection, and the layer will be rendered on top. This is useful for temporary layers. The standard way to add a layer to a map and have it managed by the map is to use
map.addLayer()
.updateWhileAnimating
boolean (defaults to false) When set to
true
, feature batches will be recreated during animations. This means that no vectors will be shown clipped, but the setting will have a performance impact for large amounts of vector data. When set tofalse
, batches will be recreated when no animation is active.updateWhileInteracting
boolean (defaults to false) When set to
true
, feature batches will be recreated during interactions. See alsoupdateWhileAnimating
.preload
number (defaults to 0) Preload. Load low-resolution tiles up to
preload
levels.0
means no preloading.useInterimTilesOnError
boolean (defaults to true) Use interim tiles on error.
properties
Object.<string, *> Arbitrary observable properties. Can be accessed with
#get()
and#set()
.Fires:
-
change
(module:ol/events/Event~BaseEvent) - Generic change event. Triggered when the revision counter is increased. -
change:extent
(module:ol/Object.ObjectEvent) -
change:maxResolution
(module:ol/Object.ObjectEvent) -
change:maxZoom
(module:ol/Object.ObjectEvent) -
change:minResolution
(module:ol/Object.ObjectEvent) -
change:minZoom
(module:ol/Object.ObjectEvent) -
change:opacity
(module:ol/Object.ObjectEvent) -
change:preload
(module:ol/Object.ObjectEvent) -
change:source
(module:ol/Object.ObjectEvent) -
change:useInterimTilesOnError
(module:ol/Object.ObjectEvent) -
change:visible
(module:ol/Object.ObjectEvent) -
change:zIndex
(module:ol/Object.ObjectEvent) -
error
(module:ol/events/Event~BaseEvent) - Generic error event. Triggered when an error occurs. -
postrender
(module:ol/render/Event~RenderEvent) - Triggered after a layer is rendered. -
prerender
(module:ol/render/Event~RenderEvent) - Triggered before a layer is rendered. -
propertychange
(module:ol/Object.ObjectEvent) - Triggered when a property is changed.
Extends
Observable Properties
Name | Type | Settable | ol/Object.ObjectEvent type | Description |
---|---|---|---|---|
extent |
module:ol/extent~Extent | undefined | yes | change:extent |
The layer extent. |
maxResolution |
number | yes | change:maxresolution |
The maximum resolution of the layer. |
maxZoom |
number | yes | change:maxzoom |
The maximum zoom level of the layer. |
minResolution |
number | yes | change:minresolution |
The minimum resolution of the layer. |
minZoom |
number | yes | change:minzoom |
The minimum zoom level of the layer. |
opacity |
number | yes | change:opacity |
The opacity of the layer. |
preload |
number | yes | change:preload |
The level to preload tiles up to. |
source |
SourceType | yes | change:source |
The layer source (or |
useInterimTilesOnError |
boolean | yes | change:useinterimtilesonerror |
Use interim tiles on error. |
visible |
boolean | yes | change:visible |
The visibility of the layer. |
zIndex |
number | yes | change:zindex |
The Z-index of the layer. |
Methods
-
Increases the revision counter and dispatches a 'change' event.
-
Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a
type
property.Name Type Description event
module:ol/events/Event~BaseEvent | string Event object.
Returns:
false
if anyone called preventDefault on the event object or if any of the listeners returned false.
-
Gets a value.
Name Type Description key
string Key name.
Returns:
Value.
-
Return the
extent
of the layer orundefined
if it will be visible regardless of extent.Returns:
The layer extent.
-
getFeatures(pixel){Promise.<Array.<module:ol/Feature~Feature>>} inherited
-
Get the topmost feature that intersects the given pixel on the viewport. Returns a promise that resolves with an array of features. The array will either contain the topmost feature when a hit was detected, or it will be empty.
The hit detection algorithm used for this method is optimized for performance, but is less accurate than the one used in
map.getFeaturesAtPixel()
: Text is not considered, and icons are only represented by their bounding box instead of the exact image.Name Type Description pixel
module:ol/pixel~Pixel Pixel.
Returns:
Promise that resolves with an array of features.
-
Get a list of object property names.
Returns:
List of property names.
-
Return the maximum resolution of the layer.
Returns:
The maximum resolution of the layer.
-
Return the maximum zoom level of the layer.
Returns:
The maximum zoom level of the layer.
-
Return the minimum resolution of the layer.
Returns:
The minimum resolution of the layer.
-
Return the minimum zoom level of the layer.
Returns:
The minimum zoom level of the layer.
-
Return the opacity of the layer (between 0 and 1).
Returns:
The opacity of the layer.
-
Return the level as number to which we will preload tiles up to.
Returns:
The level to preload tiles up to.
-
Get an object of all property names and values.
Returns:
Object.
-
Get the version number for this object. Each time the object is modified, its version number will be incremented.
Returns:
Revision.
-
Get the layer source.
Returns:
The layer source (ornull
if not yet set).
-
Get the style for features. This returns whatever was passed to the
style
option at construction or to thesetStyle
method.Returns:
Layer style.
-
getStyleFunction(){module:ol/style/Style~StyleFunction|undefined} inherited
-
Get the style function.
Returns:
Layer style function.
-
Whether we use interim tiles on error.
Returns:
Use interim tiles on error.
-
Return the visibility of the layer (
true
orfalse
).Returns:
The visibility of the layer.
-
Return the Z-index of the layer, which is used to order layers before rendering. The default Z-index is 0.
Returns:
The Z-index of the layer.
-
on(type, listener){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited
-
Listen for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.
-
once(type, listener){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited
-
Listen once for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.
-
Sets a value.
Name Type Description key
string Key name.
value
* Value.
silent
boolean Update without triggering an event.
-
Set the extent at which the layer is visible. If
undefined
, the layer will be visible at all extents.Name Type Description extent
module:ol/extent~Extent | undefined The extent of the layer.
-
Sets the layer to be rendered on top of other layers on a map. The map will not manage this layer in its layers collection, and the callback in
module:ol/Map~Map#forEachLayerAtPixel
will receivenull
as layer. This is useful for temporary layers. To remove an unmanaged layer from the map, use#setMap(null)
.To add the layer to a map and have it managed by the map, use
module:ol/Map~Map#addLayer
instead.Name Type Description map
module:ol/PluggableMap~PluggableMap Map.
-
Set the maximum resolution at which the layer is visible.
Name Type Description maxResolution
number The maximum resolution of the layer.
-
Set the maximum zoom (exclusive) at which the layer is visible. Note that the zoom levels for layer visibility are based on the view zoom level, which may be different from a tile source zoom level.
Name Type Description maxZoom
number The maximum zoom of the layer.
-
Set the minimum resolution at which the layer is visible.
Name Type Description minResolution
number The minimum resolution of the layer.
-
Set the minimum zoom (inclusive) at which the layer is visible. Note that the zoom levels for layer visibility are based on the view zoom level, which may be different from a tile source zoom level.
Name Type Description minZoom
number The minimum zoom of the layer.
-
Set the opacity of the layer, allowed values range from 0 to 1.
Name Type Description opacity
number The opacity of the layer.
-
Set the level as number to which we will preload tiles up to.
Name Type Description preload
number The level to preload tiles up to.
-
Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).
Name Type Description values
Object.<string, *> Values.
silent
boolean Update without triggering an event.
-
Set the layer source.
Name Type Description source
SourceType The layer source.
-
Set the style for features. This can be a single style object, an array of styles, or a function that takes a feature and resolution and returns an array of styles. If set to
null
, the layer has no style (anull
style), so only features that have their own styles will be rendered in the layer. CallsetStyle()
without arguments to reset to the default style. Seemodule:ol/style
for information on the default style.Name Type Description style
module:ol/style/Style~StyleLike | null Layer style.
-
Set whether we use interim tiles on error.
Name Type Description useInterimTilesOnError
boolean Use interim tiles on error.
-
Set the visibility of the layer (
true
orfalse
).Name Type Description visible
boolean The visibility of the layer.
-
Set Z-index of the layer, which is used to order layers before rendering. The default Z-index is 0.
Name Type Description zindex
number The z-index of the layer.
-
Unlisten for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
-
Unsets a property.
Name Type Description key
string Key name.
silent
boolean Unset without triggering an event.